/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.feilong.lib.beanutils.locale;

import java.util.Locale;

import com.feilong.lib.beanutils.FastHashMap;

/**
 * <p>
 * Utility methods for converting locale-sensitive String scalar values to objects of the
 * specified Class, String arrays to arrays of the specified Class and
 * object to locale-sensitive String scalar value.
 * </p>
 *
 * <p>
 * The implementations for these method are provided by {@link LocaleConvertUtilsBean}.
 * These static utility method use the default instance. More sophisticated can be provided
 * by using a <code>LocaleConvertUtilsBean</code> instance.
 * </p>
 *
 * @version $Id$
 */
public class LocaleConvertUtils{

    // ----------------------------------------------------- Instance Variables

    /**
     * <p>
     * Gets the <code>Locale</code> which will be used when
     * no <code>Locale</code> is passed to a method.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     * 
     * @return the default locale
     * @see LocaleConvertUtilsBean#getDefaultLocale()
     */
    public static Locale getDefaultLocale(){

        return LocaleConvertUtilsBean.getInstance().getDefaultLocale();
    }

    /**
     * <p>
     * Sets the <code>Locale</code> which will be used when
     * no <code>Locale</code> is passed to a method.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param locale
     *            the default locale
     * @see LocaleConvertUtilsBean#setDefaultLocale(Locale)
     */
    public static void setDefaultLocale(final Locale locale){

        LocaleConvertUtilsBean.getInstance().setDefaultLocale(locale);
    }

    /**
     * <p>
     * Gets applyLocalized.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @return <code>true</code> if pattern is localized,
     *         otherwise <code>false</code>
     * @see LocaleConvertUtilsBean#getApplyLocalized()
     */
    public static boolean getApplyLocalized(){
        return LocaleConvertUtilsBean.getInstance().getApplyLocalized();
    }

    /**
     * <p>
     * Sets applyLocalized.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param newApplyLocalized
     *            <code>true</code> if pattern is localized,
     *            otherwise <code>false</code>
     * @see LocaleConvertUtilsBean#setApplyLocalized(boolean)
     */
    public static void setApplyLocalized(final boolean newApplyLocalized){
        LocaleConvertUtilsBean.getInstance().setApplyLocalized(newApplyLocalized);
    }

    // --------------------------------------------------------- Methods

    /**
     * <p>
     * Convert the specified locale-sensitive value into a String.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param value
     *            The Value to be converted
     * @return the converted value
     * @see LocaleConvertUtilsBean#convert(Object)
     */
    public static String convert(final Object value){
        return LocaleConvertUtilsBean.getInstance().convert(value);
    }

    /**
     * <p>
     * Convert the specified locale-sensitive value into a String
     * using the conversion pattern.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param value
     *            The Value to be converted
     * @param pattern
     *            The convertion pattern
     * @return the converted value
     * @see LocaleConvertUtilsBean#convert(Object, String)
     */
    public static String convert(final Object value,final String pattern){
        return LocaleConvertUtilsBean.getInstance().convert(value, pattern);
    }

    /**
     * <p>
     * Convert the specified locale-sensitive value into a String
     * using the paticular convertion pattern.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param value
     *            The Value to be converted
     * @param locale
     *            The locale
     * @param pattern
     *            The convertion pattern
     * @return the converted value
     * @see LocaleConvertUtilsBean#convert(Object, Locale, String)
     */
    public static String convert(final Object value,final Locale locale,final String pattern){

        return LocaleConvertUtilsBean.getInstance().convert(value, locale, pattern);
    }

    /**
     * <p>
     * Convert the specified value to an object of the specified class (if
     * possible). Otherwise, return a String representation of the value.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param value
     *            The String scalar value to be converted
     * @param clazz
     *            The Data type to which this value should be converted.
     * @return the converted value
     * @see LocaleConvertUtilsBean#convert(String, Class)
     */
    public static Object convert(final String value,final Class<?> clazz){

        return LocaleConvertUtilsBean.getInstance().convert(value, clazz);
    }

    /**
     * <p>
     * Convert the specified value to an object of the specified class (if
     * possible) using the convertion pattern. Otherwise, return a String
     * representation of the value.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param value
     *            The String scalar value to be converted
     * @param clazz
     *            The Data type to which this value should be converted.
     * @param pattern
     *            The convertion pattern
     * @return the converted value
     * @see LocaleConvertUtilsBean#convert(String, Class, String)
     */
    public static Object convert(final String value,final Class<?> clazz,final String pattern){

        return LocaleConvertUtilsBean.getInstance().convert(value, clazz, pattern);
    }

    /**
     * <p>
     * Convert the specified value to an object of the specified class (if
     * possible) using the convertion pattern. Otherwise, return a String
     * representation of the value.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param value
     *            The String scalar value to be converted
     * @param clazz
     *            The Data type to which this value should be converted.
     * @param locale
     *            The locale
     * @param pattern
     *            The convertion pattern
     * @return the converted value
     * @see LocaleConvertUtilsBean#convert(String, Class, Locale, String)
     */
    public static Object convert(final String value,final Class<?> clazz,final Locale locale,final String pattern){

        return LocaleConvertUtilsBean.getInstance().convert(value, clazz, locale, pattern);
    }

    /**
     * <p>
     * Convert an array of specified values to an array of objects of the
     * specified class (if possible) using the convertion pattern.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param values
     *            Value to be converted (may be null)
     * @param clazz
     *            Java array or element class to be converted to
     * @param pattern
     *            The convertion pattern
     * @return the converted value
     * @see LocaleConvertUtilsBean#convert(String[], Class, String)
     */
    public static Object convert(final String[] values,final Class<?> clazz,final String pattern){

        return LocaleConvertUtilsBean.getInstance().convert(values, clazz, pattern);
    }

    /**
     * <p>
     * Convert an array of specified values to an array of objects of the
     * specified class (if possible).
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param values
     *            Value to be converted (may be null)
     * @param clazz
     *            Java array or element class to be converted to
     * @return the converted value
     * @see LocaleConvertUtilsBean#convert(String[], Class)
     */
    public static Object convert(final String[] values,final Class<?> clazz){

        return LocaleConvertUtilsBean.getInstance().convert(values, clazz);
    }

    /**
     * <p>
     * Convert an array of specified values to an array of objects of the
     * specified class (if possible) using the convertion pattern.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param values
     *            Value to be converted (may be null)
     * @param clazz
     *            Java array or element class to be converted to
     * @param locale
     *            The locale
     * @param pattern
     *            The convertion pattern
     * @return the converted value
     * @see LocaleConvertUtilsBean#convert(String[], Class, Locale, String)
     */
    public static Object convert(final String[] values,final Class<?> clazz,final Locale locale,final String pattern){

        return LocaleConvertUtilsBean.getInstance().convert(values, clazz, locale, pattern);
    }

    /**
     * <p>
     * Register a custom {@link LocaleConverter} for the specified destination
     * <code>Class</code>, replacing any previously registered converter.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param converter
     *            The LocaleConverter to be registered
     * @param clazz
     *            The Destination class for conversions performed by this
     *            Converter
     * @param locale
     *            The locale
     * @see LocaleConvertUtilsBean#register(LocaleConverter, Class, Locale)
     */
    public static void register(final LocaleConverter converter,final Class<?> clazz,final Locale locale){

        LocaleConvertUtilsBean.getInstance().register(converter, clazz, locale);
    }

    /**
     * <p>
     * Remove any registered {@link LocaleConverter}.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @see LocaleConvertUtilsBean#deregister()
     */
    public static void deregister(){

        LocaleConvertUtilsBean.getInstance().deregister();
    }

    /**
     * <p>
     * Remove any registered {@link LocaleConverter} for the specified locale.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param locale
     *            The locale
     * @see LocaleConvertUtilsBean#deregister(Locale)
     */
    public static void deregister(final Locale locale){

        LocaleConvertUtilsBean.getInstance().deregister(locale);
    }

    /**
     * <p>
     * Remove any registered {@link LocaleConverter} for the specified locale and Class.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param clazz
     *            Class for which to remove a registered Converter
     * @param locale
     *            The locale
     * @see LocaleConvertUtilsBean#deregister(Class, Locale)
     */
    public static void deregister(final Class<?> clazz,final Locale locale){

        LocaleConvertUtilsBean.getInstance().deregister(clazz, locale);
    }

    /**
     * <p>
     * Look up and return any registered {@link LocaleConverter} for the specified
     * destination class and locale; if there is no registered Converter, return
     * <code>null</code>.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param clazz
     *            Class for which to return a registered Converter
     * @param locale
     *            The Locale
     * @return The registered locale Converter, if any
     * @see LocaleConvertUtilsBean#lookup(Class, Locale)
     */
    public static LocaleConverter lookup(final Class<?> clazz,final Locale locale){

        return LocaleConvertUtilsBean.getInstance().lookup(clazz, locale);
    }

    /**
     * <p>
     * Look up and return any registered FastHashMap instance for the specified locale.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param locale
     *            The Locale
     * @return The FastHashMap instance contains the all {@link LocaleConverter} types for
     *         the specified locale.
     * @see LocaleConvertUtilsBean#lookup(Locale)
     * @deprecated This method will be modified to return a Map in the next release.
     */
    @Deprecated
    protected static FastHashMap lookup(final Locale locale){
        return LocaleConvertUtilsBean.getInstance().lookup(locale);
    }

    /**
     * <p>
     * Create all {@link LocaleConverter} types for specified locale.
     * </p>
     *
     * <p>
     * For more details see <code>LocaleConvertUtilsBean</code>
     * </p>
     *
     * @param locale
     *            The Locale
     * @return The FastHashMap instance contains the all {@link LocaleConverter} types
     *         for the specified locale.
     * @see LocaleConvertUtilsBean#create(Locale)
     * @deprecated This method will be modified to return a Map in the next release.
     */
    @Deprecated
    protected static FastHashMap create(final Locale locale){

        return LocaleConvertUtilsBean.getInstance().create(locale);
    }
}
